Founding software engineer

Revolty is the solar battery that has already lived a first life.

Revolty gives lithium batteries a second life. They store the solar energy of the 1 million homes already equipped with solar panels. Smaller bills smaller footprint. Our dream Make the circular battery the energy heart of every home.

Revolty since the beginning :

• Founded in July 2024 straight out of school by Valentin et Mathilde.

• 2M of battery orders secured with 15 partner solar installers

• 3 battery prototypes deployed in real-life conditions

• 1M raised in January 2026 to bring our battery to market

• First product on sale in 2027 !

Meet the Revolteam :

Were a small fast-growing team of six : two cofounders a business crew and three hardware engineers led by our CTO Romain with 8 years in battery startups and scaleups. Software Nobody yet and thats the whole point: youd be the first with the entire software side of Revolty left to build.

Were looking for a full-stack engineer to build the software brain of our battery fleet. Not one battery: hundreds of them in homes all to be monitored updated and piloted remotely. You get carte blanche on the architecture and the big technical choices. Together well go from our live POC to the first units on the market in 2027.

Your missions

1. Design the fleet architecture. The most structuring decision of the role and its yours with a clean slate to start from: multitenant model real time (10 s) vs. telemetry (1 Hz) message broker.

2. Operate the fleet and set the standards for it. Provisioning device identity OTA updates without bricking a battery in someones basement plus the monitoring alerting and remote diagnostics youll set up from scratch.

3. Build the apps & turn data into decisions from a blank page. One platform three views (Revolty installers customers): live monitoring control alerts plus the algorithms arbitrating energy flows.

4. Connect everything: home equipment through their own protocols (inverters EV chargers heat pumps) and the secure API youll design so flexibility operators and grid managers can pilot the batteries remotely.

The profile wed love to meet

• You have 3 years of experience. Enough to have shipped things broken a few and learned from both.

• Youve built and run a fleet of connected devices or youre dying to. Provisioning secure connectivity OTA monitoring remote debugging on an architecture you designed to scale: access management encryption CI/CD resilience.

• Youre a full-stack developer: front back databases cloud. Bonus points if IoT protocols speak to you (Modbus MQTT HTTP API).

• Bonus: data and product feel. Simulating energy histories or simply caring about whos on the other side of the screen a homeowner an installer. And the hardware behind it.

Our current prototype stack (nothing set in stonecome challenge it!). Frontend: Vite (React TypeScript). Backend: Python / FastAPI. Databases: PostgreSQL TimescaleDB. Cloud: Ubuntu servers. Device protocols: Modbus MQTT HTTP

The practical stuff

• Permanent contract (CDI) with a 55 to 65k gross annual salary plus BSPCE.

• Offices in Paris (6th) and workshop in Montreuil. Remote work allowed (1 to 2 days per week).

• Process: 3 interviews. An intro call (30 min) a technical one (1h) and a manager one (1h).

• Just email our HR team () with your CV.

Required Experience:

IC